morning. thanks for joining us. i'm kristen sze. >> i'm eric thomas. topping our news this half hour, pg&e is investigating the possibility that microbes inside a natural gas pipe might have caused the deadly san bruno explosion two weeks ago, this unlikely but has happened before. jenelle is live in san bruno to tell us more. >> yes, it has, ten years ago in the new mexico desert that pipeline ruptured killing 12 including three young children. investigators found pitting in the pipeline. the corroded area spread across 21 feet of the pipe and some areas 72% of the pipe wall had been eaten away. now, that pipeline in new mexico was over 50 years old and 30 inches in diameter. those are the exact same specs as the pipeline here in san bruno. the possible cause is called microbiological influence corrosion. this report came out in the san francisco chronicle this morning. it's basically micros that go undetected in a tiny pool of water inside the pipeline and then start eating away at the metal causing it to corrode. according to the article this morning, pg&e told state regulators last y

! happy friday, everyone! it's 5 a.m.. thanks for joining us. i'm eric thomas. >> i'm kristen sze. pg&e is investigating the intriguing and frightening possibility that microbes inside a gas pipe may have caused the deadly san bruno explosion two weeks ago. sounds incredulous but it's happened before. jenelle has details. >> yes, it has, kristen. ten years ago in the new mexico desert, the pipeline ruptured killing 12. investigators found pitting in the pipeline. the corroded area spread across 21 feet of the pipeline. 72% of the metal had been eaten away. the pipeline in new mexico was over 50 years old, 30 inches in diameter, the same as the one here in san bruno. the possible cause is called microbiological influence corrosion. the report came out in the san francisco chronicle this morning. basically microbes that thrive, go undetected in a tiny pool of stagnant water in a pipeline and start eating away on the metal causing it to corrode. pg&e told state regulators last year there was ongoing concern about the potential for internal corrosion on the 46-mile pipeline runs from san

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